A tarot deck has 78 cards and 22 major arcana, but what truly matters is where each one lands. These apps shuffle the deck, deal the spread you choose (card of the day, Celtic cross, past-present-future), and explain what each position represents. Several let you pick between the Rider-Waite and Marseille decks, save your readings in a journal, and teach the meanings through reference cards. Asking questions is free.